Heo Ga Yoon
Heo Ga Yoon

First Name: Ga Yoon
Family Name: Heo
Native name: 허가윤
Also Known as: Heo Ga-Yoon, Heo GaYoon
Nationality: South Korean
Gender: Female
Born: May 18, 1990

Heo Ga Yoon, better known by the mononym Gayoon, is a South Korean singer and actress. She is a former member of South Korean girl group, 4Minute, and its sub-unit 2Yoon.